Laser flight detection method and implementation for sag of electric power overhead cable

A detection method, electric power overhead technology, applied in the field of laser flight detection, can solve the problems of system operation processing and complex structure, high cost, complex environment communication, etc.
CN113376641AInactive Publication Date: 2021-09-10NANJING INST OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING INST OF TECH
Publication Date
2021-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a laser flight detection method and implementation for the sag of an electric power overhead cable, and the method comprises the steps: enabling a rotor aircraft to fly to a position above a detected overhead cable through an airborne laser radar / distance measuring sensor of the rotor aircraft, and carrying out the measurement; then screening measurement data, wherein the measurement data are used for calculating the sag of the aerial cable and the distance to the ground; 1) the measuring method for a certain measuring point of any cable includes the steps that the rotorcraft keeps the flight height and the flight speed unchanged, and transversely sweeps the cable at a constant speed in the flight detection plane in the direction perpendicular to the trend of the cable; meanwhile, the laser radar / distance measuring sensor emits a detection laser beam sequence which is perpendicular to the flight detection plane and faces downwards, and cable and obstacle height data below the flight detection plane are continuously obtained; and 2) measurement data is screened by using a fuzzy filter to obtain effective data.
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Description

technical field

[0001] The invention belongs to the application of unmanned aerial vehicles in the detection of overhead cables, in particular to a laser flight detection technology and implementation method for the sag of electric power overhead cables. Background technique

[0002] Aerial cables are the main implementation form of power transmission lines, which have the characteristics of large span, long distance, wide coverage area, complex and diverse terrain and landform. The sag, height from the ground and its distribution of power cables will have a direct impact on the safe and stable operation of the power system, and are also important indicators for power line construction and system operation. There are many influencing factors, and the influencing mechanism is relatively complex. Abnormalities and changes such as the stress of the conductor, icing, ambient wind speed, topography of the covered area, and moving objects will cause obvious changes in the cable sa...

Claims

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